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Order This File Ask a QuestionThe DAF XF 105 510hp (All) produces 510bhp and 2500Nm in standard form. Our Stage 1 ECU tuning file raises output to 590bhp and 2800Nm, a gain of 80bhp and 300Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.